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When should you call the doctor about a fever?

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According to the American Academy of Pediatrics, if you have an infant younger than 3 months old with a rectal temperature of 100.4°F or above, you should immediately call your doctor or go to an emergency room, because it could be a sign of a potentially life-threatening infection. You should also call your doctor or go to the emergency room if any child has a fever above 104°F. High fever can cause seizures in young children.

Call your doctor right away if your child has a fever and:

Call the doctor if the fever lasts more than 1 day in a child less than 2 years old or lasts more than 3 days in a child age 2 or older.

  • Looks very sick
  • Is drowsy or very fussy
  • Has a weakened immune system or other medical problems
  • Has a seizure
  • Has other symptoms such as rash, sore throat, headache, stiff neck, or earache

From: Fever Facts WebMD Medical Reference

SOURCES:

American Academy of Pediatrics: “Fever.” 

National Cancer Institute: “Fever.”

Cunha, B.A. , December 2007. Infectious Disease Clinics of North American

KidsHealth.org: “Fever and Taking Your Child's Temperature.”

Reviewed by Carol DerSarkissian on April 27, 2019

SOURCES:

American Academy of Pediatrics: “Fever.” 

National Cancer Institute: “Fever.”

Cunha, B.A. , December 2007. Infectious Disease Clinics of North American

KidsHealth.org: “Fever and Taking Your Child's Temperature.”

Reviewed by Carol DerSarkissian on April 27, 2019

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What causes a fever?

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